From 40a091212c4702e861d504e8a1d8e9c2550dfaf6 Mon Sep 17 00:00:00 2001
From: jsimomaa <jani.simomaa@gmail.com>
Date: Mon, 23 Oct 2017 09:45:00 +0300
Subject: [PATCH] Add character highlighting to SCL module editor

refs #7569

Change-Id: Ic97b0fc3a1c262cfe1a46a13a7ffc6462950a314
---
 .../scl/ui/editor2/SCLModuleEditor2.java      | 24 +++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/bundles/org.simantics.scl.ui/src/org/simantics/scl/ui/editor2/SCLModuleEditor2.java b/bundles/org.simantics.scl.ui/src/org/simantics/scl/ui/editor2/SCLModuleEditor2.java
index 05015bb0b..0e068d69b 100644
--- a/bundles/org.simantics.scl.ui/src/org/simantics/scl/ui/editor2/SCLModuleEditor2.java
+++ b/bundles/org.simantics.scl.ui/src/org/simantics/scl/ui/editor2/SCLModuleEditor2.java
@@ -10,6 +10,7 @@ import org.eclipse.jface.text.BadLocationException;
 import org.eclipse.jface.text.IDocument;
 import org.eclipse.jface.text.link.LinkedModeModel;
 import org.eclipse.jface.text.link.LinkedPosition;
+import org.eclipse.jface.text.source.DefaultCharacterPairMatcher;
 import org.eclipse.jface.text.source.ISourceViewer;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.custom.ST;
@@ -23,6 +24,7 @@ import org.eclipse.ui.contexts.IContextService;
 import org.eclipse.ui.editors.text.TextEditor;
 import org.eclipse.ui.texteditor.ITextEditorActionDefinitionIds;
 import org.eclipse.ui.texteditor.IUpdate;
+import org.eclipse.ui.texteditor.SourceViewerDecorationSupport;
 import org.eclipse.ui.texteditor.TextNavigationAction;
 import org.simantics.scl.ui.editor.SCLSourceViewerConfigurationNew;
 import org.simantics.scl.ui.editor.completion.SCLTextEditorEnvironment;
@@ -32,8 +34,17 @@ import org.simantics.scl.ui.editor2.iterator.JavaWordIterator;
 import com.ibm.icu.text.BreakIterator;
 
 public class SCLModuleEditor2 extends TextEditor {
+    
+    private static final char[] CHARS = new char[] { '(', ')', '{', '}', '[', ']', '<', '>' };
+    
+    private static final String MATCHING_BRACKETS = "matchingBrackets";
+    private static final String MATCHING_BRACKETS_COLOR = "matchingBracketsColor";
+    private static final String HIGHLIGHT_BRACKET_AT_CARET_LOCATION = "highlightBracketAtCaretLocation";
+    private static final String ENCLOSING_BRACKETS = "enclosingBrackets";
+    
     private boolean disposed = false;
     protected ResourceManager resourceManager;
+    private DefaultCharacterPairMatcher matcher;
 
     public SCLModuleEditor2() {
         super();
@@ -52,6 +63,10 @@ public class SCLModuleEditor2 extends TextEditor {
     public void init(IEditorSite site, IEditorInput input)
             throws PartInitException {
         super.init(site, input);
+        getPreferenceStore().setValue(MATCHING_BRACKETS, true);
+        getPreferenceStore().setValue(MATCHING_BRACKETS_COLOR, "192,192,192");
+        getPreferenceStore().setValue(HIGHLIGHT_BRACKET_AT_CARET_LOCATION, true);
+        getPreferenceStore().setValue(ENCLOSING_BRACKETS, true);
     }
 
     @Override
@@ -92,12 +107,21 @@ public class SCLModuleEditor2 extends TextEditor {
     protected void updatePartName() {
         setPartName(getEditorInput().getName());
     }
+
+    @Override
+    protected void configureSourceViewerDecorationSupport(SourceViewerDecorationSupport support) {
+        matcher = new DefaultCharacterPairMatcher(CHARS);
+        support.setCharacterPairMatcher(matcher);
+        support.setMatchingCharacterPainterPreferenceKeys(MATCHING_BRACKETS, MATCHING_BRACKETS_COLOR, HIGHLIGHT_BRACKET_AT_CARET_LOCATION, ENCLOSING_BRACKETS);
+        super.configureSourceViewerDecorationSupport(support);
+    }
     
     @Override
     public void dispose() {
         disposed = true;
         super.dispose();
         resourceManager.dispose();
+        matcher.dispose();
     }
 
     public boolean isDisposed() {
-- 
2.43.2